Slides in this set

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Drugs versus microorganisms· Fleming discovered the effect of the penicillin mould.· But Florey and Chain started the mass production.· Successful at first, however some people are allergic and some pathogens are resistant.…read more

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How do antibiotics work?There are two types of antibiotics:· Bacteriostatic- inhibits growth of microbes; supports the immune system.· Bacteriocidal- think of suicide.…read more

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EffectivenessThis depends on:· Concentration of the drug· How easily the drug can reach tissue in the body· How the body gets rid of it· Local pH· Susceptibility of pathogen (sensitive, moderately sensitive, resistant)…read more

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Healthcare acquired infections· This is when a pathogen is resistant to the antibiotic eg MRSA; also known as a `superbug'.· Methicillin no longer works because there was a mutation in S. aureus where the bacteria could produce penicillinase enzyme that breaks the drug down.…read more